15 Now it was the governor’s custom at the Feast to release a prisoner chosen by the crowd.
16 At that time they had a notorious prisoner, called Barabbas.
17 So when the crowd had gathered, Pilate asked them, “Which one do you want me to release to you: Barabbas, or Jesus who is called Christ?”
18 For he knew it was out of envy that they had handed Jesus over to him. (Mat 27:15-18)

Sermon main points
1) Jesus was crucified because the religious leaders were envious
2) Jesus was crucified because Christians are envious